Abstract: This invention claims ribonucleosides and their derivatives, including triphosphates, that have a 3?-ONH2 moiety instead of a 3?-OH moiety.

Abstract: This invention claims aqueous compositions that comprise triphosphates of 2?-deoxynucleoside derivatives that have, instead of a 3?-OH moiety, a 3?-ONH2 moiety; wherein said compositions contain less than 0.5 mole percent contaminating triphosphate having a 3?-OH moiety, as well as processes for providing such compositions. The compositions further must contain insubstantial amounts of hydroxylamine.

Abstract: This invention provides for processes for binding to and/or chemically transforming a preselected target, where the process involves contacting said target to an oligonucleotide molecule that contains one or more “non-standard” nucleotides, which are nucleotide analogs that, when incorporated into oligonucleotides (DNA or RNA, collectively xNA), present to a pattern of hydrogen bonds that is different from the pattern presented by adenine, guanine, cytosine, and uracil. This disclosure provides an example where such an oligonucleotide molecule is built from both D- and L-mirror image carbohydrates in the backbone. It also provides a process for obtaining these binders and/or transformers by a laboratory in vitro selection process that exploits rolling circle amplification rather than the polymerase chain reaction.

Abstract: This invention covers processes for the isothermal amplification of DNA molecules having a preselected sequence. It is based on the unexpected discovery that primers having, at some positions, adenine substituted by 2-aminopurine or diaminopurine, guanine by inosine, thymine by 2-thiothymine, and cytosine by N4-ethylcytosine (“SAMRS nucleotides”) were accepted by enzymes used in the standard helicase-dependent amplification (HDA). Further unexpected was the discovery that target nucleotides are efficiently amplified in an HDA-like process (hereinafter abbreviated as simply HDA) using substituted primers. Also discovered was the diminution of spurious products through the use of SAMRS-substituted primers.

Abstract: This invention provides compounds that are of the class of nucleoside analogs, and more specifically nucleoside analogs that have a non-standard nucleobase, and more specifically analogs where a side chain is appended to said non-standard nucleobase, where said side chain can be cleaved so as to leave behind no more than five atoms appended to the nucleobase as a “scar”. The claimed compounds are useful as intermediates in processes that transiently introduce tags, labels, fluorescent molecules, or other species into oligonucleotides, as in sequencing using cyclic reversible termination, in in vitro selection using functionalized nucleotides that must later be PCR amplified, or in nucleotide capture protocols used in diagnostics.

Abstract: This invention relates to nucleoside, nucleotide, and oligonucleotide analogs that incorporate non-standard nucleobase analogs, defined to be those that present a pattern of hydrogen bonds to a paired nucleobase analog in a complementary strand that is different from the pattern presented by adenine, guanine, cytosine, and thymine. The invention is specifically concerned with nucleotide analogs that present the donor-donor-acceptor, hydrogen bonding patterns on pyrimidine analogs, and especially those that are analogs of ribonucleotides, including protected ribonucleotides suitable for phosphoramidite-based synthesis of RNA. The heterocycles on these nucleoside analogs are aminopyridones that have electron withdrawing groups attached to the position analogous to the 5-position of the ring in standard pyrimidines, including nitro, cyano, and carboxylic acid derivatives.

Abstract: This patent application claims processes and compositions of matter that enable the discovery of single nucleotide polymorphisms (SNPs) that distinguish the genomes of two individual organisms in the same species, as well as that distinguish the paternal and maternal genetic inheritance of a single individual, as well as distinguish the genomes of cells in special tissues (e.g. cancer tissues) within an individual from the genomes of the standard cells in the same individuals, as well as the SNPs that are discovered using these processes and compositions. Two steps are essential to the invention disclosed in this application. The first step provides four sets of primers, which are designated “T-extendable”, “A-extendable”, “C-extendable”, and “G-extendable”. These primers, when targeted against a reference genome as a template, add (respectively) T, A, C, and G to their 3?-ends in a template-directed primer extension reaction.

Abstract: This invention relates to the field of nucleic acid chemistry, more specifically to the field of compositions of matter that comprise triphosphates of modified 2?-deoxynucleosides and oligonucleotides that are formed when these are appended to the 3?-end of a primer, wherein said modifications comprise NH2 moiety attached to their 3?-hydroxyl group and a fluorescent species in a form of a tag affixed to the nucleobase via a linker that can be cleaved. Such compositions and their associated processes enable and improve the sequencing of oligonucleotides using a strategy of cyclic reversible termination, as outlined in U.S. Pat. No. 6,664,079. Most specifically, the invention concerns compositions of matter that are 5?-triphosphates of ribo- and 2?-deoxyribonucleosides carrying detectable tags and oligonucleotides that might be derived from them.

Abstract: A computer research tool is provided for searching and displaying biological data. Specifically, the invention provides a computer research tool for performing computerized research of biological data from various databases and for providing a novel graphical user interface that significantly enhances biological data representation, progressive querying and cross-navigation of windows and databases. The invention can be implemented in numerous ways, including as a system, a device, a method, or a computer readable medium.

Abstract: The present invention relates to a novel advantageous process for amplifying nucleic acids using DNA/PNA primers and a temperature-stable polymerase enzyme.

Abstract: The disclosure describes a method for incorporating into double stranded DNA and RNA base pairs composed of pairing units that fit the Watson-Crick geometry in that they involve a monocyclic six membered ring pairing with a fused bicyclic heterocyclic ring system composed of a five member ring fused with a six membered ring, with the orientation of the heterocycles with respect to each other and with respect to the backbone chain analogous to that found in DNA and RNA, but with a pattern of hydrogen bonds holding the base pair together different from that found in the AT and GC base pairs (a "non-standard base pair").

Abstract: Analogs of DNA containing sulfides, sulfoxides, and sulfones as linking groups between subunits capable of forming bonds with natural oligonucleotides are described. The analogs are lipophilic, stable to chemical degradation under a wide range of conditions and stable to enzymatic degradation in vivo.

Abstract: A support system for organic synthesis comprising magnetic particles in a dispersion medium covalently attached to functional groups having affinity for polymer subunits, and methods for making and using the support system, e.g. for synthesis of oligodeoxynucleotides and polypeptides.